STIHL FS 45 Trimmer: Features, Specs, Price & More

In the realm of outdoor power tools, few names are as synonymous with reliability and performance as STIHL. For homeowners and professionals alike, the STIHL FS 45 trimmer stands out as a true workhorse in the world of lawn care and landscaping. Whether you’re a seasoned gardener looking to maintain pristine edges or a weekend warrior tackling overgrown weeds, the FS 45 is a versatile and dependable tool that can transform your outdoor spaces. In this blog post, we will delve into the intricacies of the STIHL FS 45 trimmer, exploring its design, features, and the benefits it brings to your yard maintenance routine. Get ready to discover how this powerhouse can make your lawn care tasks more efficient and enjoyable.

STIHL 45 Features

The STIHL FS 45 trimmer is a remarkable piece of outdoor equipment known for its impressive array of features. Whether you’re a professional landscaper or a homeowner with a passion for maintaining a well-groomed yard, this trimmer offers a range of functions designed to make your yard work more efficient and enjoyable. Let’s take a closer look at some of its standout features:

  1. Powerful Engine: At the heart of the FS 45 is a robust, fuel-efficient engine. Powered by a dependable 2-MIX engine technology, it delivers ample cutting power while minimizing fuel consumption and emissions. This ensures that you can tackle even the toughest vegetation with ease.
  2. Lightweight Design: Weighing in at just under 10 pounds, the FS 45 is one of the lighter trimmers in its class. Its ergonomic design and balanced weight distribution make it comfortable to handle, reducing fatigue during extended use.
  3. EasyStart System: Starting the trimmer is a breeze thanks to the EasyStart system. This feature reduces the resistance in the starter cord, allowing for quick and effortless engine ignition.
  4. Simplified Starting Procedure: The FS 45 comes with a simplified starting procedure, including a semi-automatic choke lever and one-touch stop control. These features make starting and stopping the trimmer incredibly straightforward.
  5. Adjustable Loop Handle: The adjustable loop handle allows you to customize the trimmer’s grip to your comfort and working style, providing better control and maneuverability as you tackle different tasks in your yard.
  6. Cutting Head Options: STIHL offers a range of cutting head options for the FS 45, including nylon line heads for general grass trimming and a blade attachment for tackling tougher, woody vegetation. This versatility means you can adapt the trimmer to suit various yard maintenance needs.
  7. Fuel Efficiency: With its efficient engine design, the FS 45 consumes less fuel, reducing both operating costs and environmental impact. This makes it a practical choice for eco-conscious users.
  8. Safety Features: STIHL prioritizes safety, and the FS 45 is no exception. It includes a throttle trigger lockout and a high-visibility deflector, ensuring that you can work comfortably and safely.
  9. Easy Maintenance: Keeping the FS 45 in top working condition is hassle-free, thanks to its easy-to-access air filter and spark plug. Routine maintenance tasks can be performed without the need for extensive mechanical knowledge.
  10. STIHL Quality: Finally, the STIHL name is synonymous with quality and durability. The FS 45 trimmer is built to withstand the rigors of regular use and is backed by the reputation of a company known for producing long-lasting outdoor power equipment.

The STIHL FS 45 trimmer is a versatile and reliable tool that combines power, ease of use, and durability. Whether you’re tackling routine lawn maintenance or facing more challenging landscaping tasks, this trimmer’s features make it a valuable addition to your outdoor toolkit.

Service Kit Installation for STIHL FS 45

STIHL 45 Specs

Here’s a table summarizing the specifications and key features of the STIHL FS 45 trimmer:

Engine Type2-MIX (Two-stroke)
Displacement27.2 cc
Power OutputApproximately 0.75 kW (1.0 hp)
Fuel CapacityApprox. 0.33 liters (11.2 fluid ounces)
Fuel TypeGasoline mixed with 2-cycle oil (50:1 ratio)
WeightApproximately 9.9 pounds (4.5 kg)
Starting SystemEasyStart System
Cutting Head OptionsNylon line head, blade attachment
Handle TypeAdjustable loop handle
Throttle Trigger LockoutYes
DeflectorHigh-visibility for safety
Fuel EfficiencyDesigned for reduced fuel consumption
WarrantyTypically comes with a limited warranty
Recommended UseGrass trimming, edging, light brush cutting
MaintenanceEasy access to air filter and spark plug
Brand ReputationSTIHL is known for quality and durability

It’s always a good practice to refer to the manufacturer’s official website or consult the user manual for the most up-to-date information on a particular model.

STIHL FS 45 Price

The price of the STIHL FS 45 trimmer varies depending on factors such as location, dealer, and any promotional or seasonal discounts. Typically, the STIHL FS 45 trimmer was priced in the range of $199 to $249 USD for the standard package, which includes the trimmer unit, a nylon line cutting head, and necessary accessories.

I recommend checking with your local STIHL authorized dealer or visiting the official STIHL website for the most current pricing information on the STIHL FS 45 trimmer in your area. Prices may also vary based on any additional accessories or attachments you choose to purchase with the trimmer.

STIHL FS 45 Review

As of my last knowledge update in September 2021, I can provide you with a general overview of what users were saying about the STIHL FS 45 trimmer based on common feedback and reviews available at that time. However, keep in mind that user opinions and experiences can vary widely, and it’s always a good idea to check for the most recent user reviews and feedback on websites, forums, or social media platforms for the most up-to-date information. Here are some common sentiments regarding the STIHL FS 45 trimmer:

  1. Reliability: Many users praised the STIHL FS 45 for its reliability and consistent performance. They mentioned that it started easily and ran smoothly, even after extended use.
  2. Ease of Use: Users appreciated the trimmer’s lightweight design and ergonomic features, which made it comfortable to handle for extended periods. The EasyStart system and simplified starting procedure were also mentioned as convenient features.
  3. Versatility: Users liked the fact that the FS 45 could handle a range of tasks, from basic grass trimming to tackling tougher weeds and light brush. The availability of different cutting head options, such as nylon line heads and blade attachments, added to its versatility.
  4. Fuel Efficiency: Many users noted that the trimmer’s fuel efficiency was a positive aspect, as it helped reduce operating costs.
  5. Build Quality: STIHL’s reputation for quality and durability was often cited as a major selling point. Users reported that the trimmer felt well-built and capable of withstanding regular use.
  6. Safety Features: The presence of safety features like the throttle trigger lockout and high-visibility deflector was appreciated for enhancing user safety during operation.
  7. Maintenance: Users found the trimmer relatively easy to maintain, with accessible air filters and spark plugs for routine servicing.

It’s important to note that while the STIHL FS 45 received positive feedback from many users, individual experiences may vary based on factors like maintenance practices, proper usage, and local conditions. Additionally, product opinions and availability may have changed since my last update in September 2021, so it’s advisable to seek recent user reviews and consult with STIHL dealers for the latest information on this trimmer.

How to feed a STIHL FS 45

STIHL FS 45 Alternatives

While the STIHL FS 45 is a popular and reliable trimmer, there are several alternatives from different brands that you might consider based on your specific needs and preferences. Here are some alternatives to the STIHL FS 45 trimmer:

  1. Husqvarna 128LD: The Husqvarna 128LD is a lightweight and versatile string trimmer known for its ease of use and reliability. It features a detachable shaft for easy storage and transport and comes with various attachments for different lawn care tasks.
  2. Echo SRM-225: Echo’s SRM-225 is a gas-powered string trimmer known for its powerful performance and durability. It features a 21.2 cc engine and a 2-line Rapid-Loader head for quick line replacement.
  3. Honda HHT25SLTAT: If you prefer four-stroke engines, the Honda HHT25SLTAT is a well-regarded option. It offers quieter operation, reduced emissions, and excellent fuel efficiency.
  4. Black+Decker LST136: For those looking for a cordless electric option, the Black+Decker LST136 is a popular choice. It’s battery-powered, lightweight, and suitable for light to medium-duty trimming and edging.
  5. Ryobi RY253SS: Ryobi offers a range of affordable gas trimmers, with the RY253SS being a notable choice. It comes with an adjustable handle and accepts various attachments for added versatility.
  6. Craftsman WS210: The Craftsman WS210 is a gas-powered string trimmer that offers a good balance of power and value. It features a 25 cc engine and comes with a 2-line bump feed head.
  7. WORX WG163 GT 3.0: This cordless electric trimmer from WORX is known for its lightweight design and versatility. It can function as both a trimmer and an edger, making it suitable for small to medium-sized yards.
  8. Greenworks 21302: Greenworks offers a range of electric trimmers, and the 21302 is one of their popular models. It’s cordless, lightweight, and environmentally friendly.
  9. Makita XRU15PT1: Makita is known for its high-quality power tools, and the XRU15PT1 is a cordless string trimmer with a brushless motor for improved efficiency and performance.
  10. Cub Cadet BC490: Cub Cadet offers a range of gas trimmers, and the BC490 is one of their options. It’s designed for heavy-duty tasks and features a 25 cc 4-cycle engine.

When choosing an alternative to the STI, it’s essential to consider factors such as your specific trimming needs, budget, fuel preference (gas or electric), and the availability of local service and support. Reading user reviews, consulting with local dealers, and testing the trimmer if possible can help you make an informed decision based on your requirements.


In conclusion, the STIHL FS 45 trimmer proves to be a versatile and dependable tool that has garnered a positive reputation among users. Its reliable 2-MIX engine, lightweight design, and user-friendly features such as the EasyStart system make it a go-to choice for homeowners and gardening enthusiasts. With options for various cutting heads, it adapts easily to a range of yard maintenance tasks, from routine grass trimming to tackling thicker vegetation with a blade attachment.

Users have consistently praised the FS 45 for its reliability, ease of use, and impressive fuel efficiency, reinforcing STIHL’s reputation for quality and durability. Safety features like the throttle trigger lockout and high-visibility deflector enhance user safety during operation. Additionally, the trimmer’s accessibility for routine maintenance tasks further adds to its appeal.

While the STIHL FS 45 trimmer has been well-received by many, it’s worth considering other options from different brands to find the best fit for your specific needs and preferences. Alternatives like the Husqvarna 128LD, Echo SRM-225, or Honda HHT25SLTAT offer their own set of features and advantages.

Ultimately, the choice of a trimmer depends on factors such as your yard size, the types of vegetation you need to trim, your budget, and your familiarity with different types of power equipment. Regardless of your choice, proper maintenance and adherence to safety guidelines will ensure that your trimmer serves you well in keeping your outdoor spaces looking their best.


Here are some frequently asked questions (FAQs) about the STIHL FS 45 trimmer:

  1. How do I start the STIHL FS 45 trimmer?
    • To start the FS 45 trimmer, follow these steps:
      • Move the choke lever to the “Cold Start” position.
      • Prime the fuel by pressing the primer bulb a few times.
      • Pull the starter cord until you feel resistance, then give it a strong, smooth pull.
      • Once the engine fires, move the choke lever to the “Run” position.
  2. What type of fuel does the FS 45 trimmer use?
    • The STIHL FS 45 trimmer uses a mixture of unleaded gasoline and 2-cycle engine oil. The recommended mixing ratio is typically 50:1, meaning 50 parts gasoline to 1 part oil.
  3. Can I use ethanol-blended gasoline in the FS 45 trimmer?
    • It’s best to avoid ethanol-blended gasoline, if possible, as it can lead to carburetor and fuel system issues. Use fresh, ethanol-free gasoline to ensure optimal performance and longevity.
  4. How do I replace the trimmer line on the FS 45?
    • Replacing the trimmer line on the FS 45 typically involves removing the spool cover, winding new line onto the spool, and reassembling it. Refer to the user manual for detailed instructions, as the process can vary slightly depending on the model and head type.
  5. Can I attach a blade to the FS 45 trimmer for cutting thicker vegetation?
    • Yes, the STIHL FS 45 trimmer is compatible with a blade attachment, which allows you to cut through thicker, woody vegetation. Be sure to follow safety guidelines and switch to the appropriate attachment for blade use.
  6. Is the FS 45 trimmer suitable for professional landscaping work?
    • While the FS 45 is a reliable and capable trimmer, it’s primarily designed for homeowners and light to medium-duty tasks. For heavy professional landscaping work, STIHL offers a range of higher-powered trimmers and brush cutters.
  7. How do I maintain the FS 45 trimmer?
    • Regular maintenance for the FS 45 includes cleaning the air filter, checking the spark plug, lubricating the gearbox, and inspecting the trimmer head for wear. Consult the user manual for a detailed maintenance schedule.
  8. What is the warranty for the STIHL FS 45 trimmer?
    • The warranty for the STIHL FS 45 trimmer can vary by location and dealer. Typically, it comes with a limited warranty that covers manufacturing defects. Be sure to register your product and inquire about the specific warranty terms when purchasing.
  9. How do I adjust the handle height on the FS 45 trimmer?
    • The FS 45 trimmer typically features an adjustable loop handle. To adjust the handle height, loosen the handle locking nut, reposition the handle to your desired height, and then tighten the nut securely.
  10. Can I use the FS 45 trimmer as an edger?
    • While the FS 45 is primarily designed for trimming, it can be used for edging by angling the trimmer head and carefully following the edge of the lawn. However, dedicated lawn edgers may provide better results for precise edging tasks.

Remember that the specific details and instructions may vary slightly depending on the trimmer’s model and any updates made by STIHL. Always refer to the user manual provided with your trimmer for the most accurate and up-to-date information.